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Shalnov [3]
3 years ago
10

Simplify (4i)(–5i)(6i) –120 –120i(incorrect) 120i 120

Mathematics
1 answer:
professor190 [17]3 years ago
4 0

Answer:

120i

Step-by-step explanation:

;i × i = -1....so hence

4i × (-5i) = -20 i^2...which is -20(-1) = 20....

then you multiply with 6i

20(6i) = 120i

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Determine the measure of EBD
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Two angels of a triangle measure 65 and 75. Which is not the measure of an exterior angle of the triangle
Andre45 [30]
An exterior angle is the sum of the two other interior angles 

<span>the three interior angles are 55 and 65 and 180-(55+65)=60 </span>

<span>so 60 + 55 = 115 </span>
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brainlest answer.
3 0
3 years ago
Quick it is due in 30 mins plz do quick
dimulka [17.4K]

Answer:

1. 69°

2. 97°

3. 145°

4. 150°

5. 128°

6. 74°

Step-by-step explanation:

To find the angle measure of the missing angle, we have to note that the angle measures of a quadrilateral will all equal up to be 360°.

If we know 3 out of the 4 angles and the sum of the angles, we can add up the angles we know then subtract that from 360.

<em>Number 1:</em>

87+112+92=291

360-291=69

<em>Number 2:</em>

<em></em>124+71+68=263<em></em>

<em></em>360-263=97<em></em>

<em></em>

<em>Number 3:</em>

<em></em>95+46+74=215<em></em>

<em></em>360-215=145<em></em>

<em></em>

<em>Number 4:</em>

<em></em>72+49+89=210

360-210=150

<em>Number 5:</em>

<em></em>69+65+98=232<em></em>

360-232=128

<em>Number 6:</em>

<em></em>77+123+86=286<em></em>

<em></em>360-286=74<em></em>

<em></em>

<em></em>

<em><u>Hope this helped!</u></em>

5 0
3 years ago
Polygon a is similar to polygon b. the sides of polygon a are three times larger than the corresponding sides of polygon b. the
JulsSmile [24]

Answer:

b 48

Step-by-step explanation:

it says the sides a are 3 times larger so you are trying to find the perimeter of b so you do 144 divided by 3 since it is 3 times larger.

3 0
3 years ago
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